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US07498521B2 Method and apparatus for marking a printed circuit board 有权
用于标记印刷电路板的方法和装置

Method and apparatus for marking a printed circuit board
Abstract:
A method and apparatus include providing a printed circuit board (PCB) having at least one light permeable layer, at least one non-light permeable layer having at least one void therethrough that may be vertically aligned with the at least one light permeable layer, and a source of illumination to simultaneously illuminate through the void and the at least one light permeable layer.
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